print(5 / 3)
print(5 % 3)
print('hello', 'world', sep="***")
a = 3; b = 4
print('Hello')
print(100)
print('hao', 123, sep='***')
print('hao', 123)
uname = input('username:')
print('Welcome:', uname, sep='***')
uname = input('username: ')
print('welcom to:' )
name = input('username: ')
print('Welcome:', uname)